Fluke 87 III Manual do Utilizador Página 1

® 80 Series III Multimeters Users Manual October 1997 Rev.5, 12/03 1997-2003 Fluke Corporation, All rights reserved. All product names are tradema

80 Series IIIUsers Manual2Table 1. International Electrical SymbolsAC (Alternating Current) Earth groundDC (Direct Current) FuseAC or DC Conforms to E

Safety Information3• Remove test leads from the meter beforeyou open the battery door.• Inspect the test leads for damagedinsulation or exposed meta

80 Series IIIUsers Manual4To protect yourself, use the following guidelines:• Use caution when working with voltages above 30 Vac rms, 42 V ac peak,

Your Meter’s Features5Table 3. Rotary Switch PositionsSwitch Position Function PageK AC voltage measurement 12L DC voltage measurement 12dmV400 mV dc

80 Series IIIUsers Manual6Table 4. PushbuttonsButton Function Button Function PageU(Bluebutton)ReEmA/A, µAPower-upSelects capacitance.Switches betwee

Your Meter’s Features7Table 4. Pushbuttons (cont)Button Function Button Function Pageb Model 87:yellow buttonb Models 83,85: graybuttonAny switchpos

80 Series IIIUsers Manual8136789510101012341211iy1f.epsFigure 1. Display Features (Model 87 Shown)

Your Meter’s Features9Table 5. Display FeaturesNumber Feature Indication PageA±Polarity indicator for the analog bar graph. 28BQRelative (REL) mode is

80 Series IIIUsers Manual10Table 5. Display Features (continued)Number Feature Indication PageJ A, µA, mA A: Amperes (amps). The unit of current.µA:

Your Meter’s Features11Table 5. Display Features (continued)Number Feature Indication PageK 4000 mV Displays the currently selected range. See specif

Lifetime Limited WarrantyEach Fluke 20, 70, 80, 170 and 180 Series DMM will be free from defects in material and workmanship for its lifetime. As use

80 Series IIIUsers Manual12Input Alert™ FeatureIf a test lead is plugged into the mA/µA or A terminal, butthe rotary switch is not correctly set to th

Making Measurements13The following are some tips for measuring voltage:• When you measure voltage, the meter actsapproximately like a 10 MΩ (10,000,0

80 Series IIIUsers Manual14Testing for ContinuityCautionTo avoid possible damage to the meter or tothe equipment under test, disconnect circuitpower a

Making Measurements15MIN MAX RANGE HOLD HHzRELmAAmVVVOFF!!1000V MAX400mA MAXFUSED10A MAXFUSEDPEAK MIN MAXµACAT IIActivates continuity beeperON(close

80 Series IIIUsers Manual16Measuring ResistanceCautionTo avoid possible damage to the meter or tothe equipment under test, disconnect circuitpower and

Making Measurements17MIN MAX RANGE HOLD HHzRELmAAmVVVOFF!!ACOMVmA µA 1000V MAX400mA MAXFUSED10A MAXFUSEDPEAK MIN MAXµACAT IICircuit PowerOFFIn-Ci

80 Series IIIUsers Manual18Using Conductance for High Resistance orLeakage TestsConductance, the inverse of resistance, is the ability of acircuit to

Making Measurements19The meter measures capacitance by charging thecapacitor with a known current for a known period of time,measuring the resulting v

80 Series IIIUsers Manual20• To estimate capacitance values above 5 µF, use thecurrent supplied by the meter’s resistance function,as follows:1. Set

Making Measurements21Testing DiodesCautionTo avoid possible damage to the meter or tothe equipment under test, disconnect circuitpower and discharge a

iTable of ContentsTitle PageIntroduction...

80 Series IIIUsers Manual22Measuring AC or DC CurrentWWarningNever attempt an in-circuit currentmeasurement where the open-circuitpotential to earth i

Making Measurements23MIN MAX RANGE HOLD HHzRELmAAmVVVOFF!!ACOM VmA µA 1000V MAX400mA MAXFUSED10A MAXFUSEDPEAK MIN MAXµACAT IICircuit Power: O

80 Series IIIUsers Manual243. If you are using the A terminal, set the rotary switch tomA/A. If you are using the mA/µA terminal, set therotary switc

Making Measurements25Measuring FrequencyFrequency is the number of cycles a signal completeseach second. The meter measures the frequency of avoltage

80 Series IIIUsers Manual26Table 7. Functions and Trigger Levels for Frequency MeasurementsFunction RangeApproximateTrigger Level Typical ApplicationK

Making Measurements27Measuring Duty CycleDuty cycle (or duty factor) is the percentage of time asignal is above or below a trigger level during one cy

80 Series IIIUsers Manual28Determining Pulse WidthFor a periodic waveform (its pattern repeats at equal timeintervals), you can determine the amount o

4-1/2 Digit Mode (Model 87)29Models 83 and 85 Bar GraphThe bar graph on Models 83 and 85 consists of 43segments. The number of lit segments is relativ

80 Series IIIUsers Manual30MIN MAX Recording ModeThe MIN MAX mode records minimum and maximuminput values. When the inputs go below the recordedminimu

MIN MAX Recording Mode31Table 8. MIN MAX FunctionsButton MIN MAX FunctionM Enter MIN MAX recording mode. The meter is locked in the range displayed be

80 Series IIIUsers ManualiiAnalog Bar Graph...

80 Series IIIUsers Manual32Touch Hold ® ModeWWarningThe Touch Hold mode will not captureunstable or noisy readings. Do not useTouch Hold mode to deter

Maintenance33Uses for the Zoom Mode (Models 83 and 85)The relative mode, combined with the increasedsensitivity of the bar graph’s zoom mode, helps yo

80 Series IIIUsers Manual34Testing the FusesBefore measuring current, test the appropriate fuse asshown in Figure 9. If the tests give readings other

Maintenance35Replacing the BatteryReplace the battery with a 9 V battery (NEDA A1604,6F22, or 006P).WWarningTo avoid false readings, which could lead

80 Series IIIUsers Manual366. Verify that the rotary switch and the circuit boardswitch are in the OFF position.7. Replace the case top, ensuring th

Service and Parts37F1F21iy12f.epsFigure 10. Battery and Fuse Replacement

80 Series IIIUsers Manual38Table 9. Replacement PartsItem DescriptionFluke Partor ModelNumber QuantityBT1 Battery, 9 V 614487 1F1 W Fuse, 0.440 A, 100

Service and Parts39F2F1MP2H1BT1H5, 6MP85MP86C81YAC70AAlligator ClipsS1MP92TM2TM1TM3TL75Test Lead SetMP1 AC20 Alligator Clip (Black)T24 Test Lead SetTP

80 Series IIIUsers Manual40Table 10. Accessories*Item DescriptionFluke PartNumber QuantityTL20 Industrial Test Lead Set (Optional) TL20 AC70A Alligat

Specifications 41 Specifications Maximum Voltage between any Terminal and Earth Ground: 1000 V rms WFuse Protection for mA or µA inputs: 44

iiiList of TablesTable Title Page1. International Electrical Symbols...

80 Series IIIUsers Manual42Table 11. Models 85 and 87 AC Voltage Function SpecificationsFunction Range Resolution Accuracy150 Hz - 60 Hz 45 Hz - 1 kHz

Specifications43Table 12. Model 83 AC Voltage Function SpecificationsFunction Range Resolution Accuracy150 Hz - 60 Hz 45 Hz - 1 kHz 1 kHz - 5 kHzK2400

80 Series IIIUsers Manual44Table 13. DC Voltage, Resistance, and Conductance Function SpecificationsAccuracy1Function Range Resolution Model 83 Model

Specifications45Table 14. Current Function SpecificationsAccuracy1Function Range Resolution Model 832Model 853, 4Model 873, 4Burden Voltage(typical)mA

80 Series IIIUsers Manual46Table 14. Current Function Specifications (continued)Accuracy1Function Range Resolution Model 832Model 853, 4Model 873, 4Bu

Specifications47Table 15. Capacitance and Diode Function SpecificationsFunction Range Resolution Accuracy1E5.00 nF0.0500 µF0.500 µF5.00 µF0.01 nF0.000

80 Series IIIUsers Manual48Table 17. Frequency Counter Sensitivity and Trigger LevelsMinimum Sensitivity (RMS Sinewave) Approximate Trigger LevelInput

Specifications49Table 18. Electrical Characteristics of the TerminalsFunctionOverloadProtection1InputImpedance(nominal)Common Mode RejectionRatio(1 kΩ

80 Series IIIUsers Manual50Table 19. MIN MAX Recording SpecificationsModel Nominal Response Accuracy83 100 ms to 80%1 sSpecified accuracy ±12 counts f

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vList of FiguresFigure Title Page1. Display Features (Model 87 Shown)... 82. Measuring AC and D

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Introduction 1 Introduction WWarning Read "Safety Information" before you use the meter. Except where noted, the descriptions and i